How to use context.watch in initState

[magic3584]

Describe the bug
Cannot use context.watch() in initState

To Reproduce

  @override
  void initState() {
    super.initState();
    Future.delayed(Duration.zero, () {
      final needRefresh = context.watch<MyState>().needRefresh;
      _refresh(needRefresh);
    });
  }

  _refresh(needRefresh) {
    _fetchData(type: type);
  }

Expected behavior
I have several pages which showing different type data

// pageA.dart & pageB.dart
  @override
  void initState() {
    super.initState();
    _fetchData(type: type)
  }

So I wanna listening to MyState.needRefresh change and re-fetch the data whatever which page is showing.
It works fine in build() except at least called once, so I move them in to initState(), here comes the error

flutter: 'package:provider/src/provider.dart': Failed assertion: line 274 pos 7: 'context.owner!.debugBuilding ||
          listen == false ||
          debugIsInInheritedProviderUpdate': Tried to listen to a value exposed with provider, from outside of the widget tree.

This is likely caused by an event handler (like a button's onPressed) that called
Provider.of without passing `listen: false`.

To fix, write:
Provider.of<MyState>(context, listen: false);

It is unsupported because may pointlessly rebuild the widget associated to the
event handler, when the widget tree doesn't care about the value.

Please tell me how can I fix this.

[rrousselGit]

You don't. Use context.read inside initState

[magic3584]

You don't. Use context.read inside initState

But I wanna call some function when value changes.